Viessmann VITODENS 100-W Installation And Service Instructions Manual page 28

Commissioning, inspection, maintenance
Further details regarding the individual steps
r r
28
(cont.)
03. Turn rotary selector "tr" fully
clockwise for less than 2 s and then
back to the control range on the
right.
The display shows "SERV", "A"
and the boiler water temperature is
shown.
04. Adjust the upper heating output:
Turn rotary selector "tr" to the
control range on the right until the
display shows 5 bars for the upper
heating output.
05. Measure the CO
heating output.
The CO content must be between
2
7.0 and 10.5 %.
06. Adjust the lower heating output:
Turn rotary selector "tr" to the
control range on the left until the dis-
play shows 1 bar for the lower heat-
ing output.
07. Test the CO content for lower heat-
2
ing output.
The CO content must be between
2
0.3 and 0.9 % below the value for
the upper heating output.
content for upper
2